EF90H6: The specimen is extraordinary, both for its characteristics and for its size. The crystals form a slightly divergent group, are prismatic and are terminated by the three faces of a flat rhombohedron. Color and luster are exceptional and so is the transparency.
We’ll give a copy of analysis to the buyer.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineralogical Record’ on page 482 in the volume 37, number 5
Minh Tien pegmatite, Luc Yen, Yenbai Province  Vietnam (2005)

Specimen size: 7 × 6.8 × 6.8 cm = 2.76” × 2.68” × 2.68”